Swing analyzer

Abstract

A calculating unit of a swing analyzer calculates, assuming that a golf club is in a uniform circular motion about a virtual center of rotation O during a swing, a virtual speed Vh at a central point R of a golf club head, based on a distance between first and second acceleration sensors, a distance between the first acceleration sensor and the central point R of a golf club head and outputs from the first and second acceleration sensors, and calculates the speed of central point R of a golf club head utilizing the virtual speed Vh.

Description

[0001]This nonprovisional application is based on Japanese Patent Application No. 2008-093427 filed with the Japan Patent Office on Mar. 31, 2008, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a swing analyzer and, more specifically, to a swing analyzer capable of measuring swing speed of a portion as an object of measurement of a swing member.[0004]2. Description of the Background Art[0005]Conventionally, various swing analyzers measuring states of swings of golf or baseball batting have been proposed.[0006]By way of example, Japanese Patent Laying-Open No. 3-126477 discloses a swing analyzing device including a swing implement having a shaft-like part, first and second two acceleration sensors arranged spaced apart by a distance on the shaft-like part with the direction of acceleration detection substantially matching axial line of the shaft-like part, and a transla...

AI Technical Summary

Benefits of technology

[0018]The present invention was made in view of the foregoing, and its object is to provide a swing analyzer capable of calculating accurate swing speed with the cost of the analyzer itself reduced.

[0022]By the swing analyzer in accordance with the present invention, the swing speed can accurately be calculated, and the manufacturing cost can be reduced.

Problems solved by technology

Therefore, the shaft is in a very complicated motion during a swing.

By the method described in Japanese Patent Laying-Open No. 3-126477, however, the angular velocity of the shaft in complicated motion cannot accurately be calculated.

In the golf swing frequency analyzer described in international publication W02000 / 029075, the swing speed of the golf club during a swing is not detected and, therefore, swing analysis based on the swing speed is impossible.

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